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02a0027838;90-5410-803-7;¥758.05;20011205d1996 ekmy0engy01;eng;a z 100yy;r;North American tunneling'96;proceedings of the international conference on North American tunneling and the 22nd general assembly of the International Tunneling Association. v.1, held in Washington, DC, April 21-24, 1996;ed. by Levent Ozdemir;Rotterdam;A.A. Balkema;1996;xi, 529 p.;ill.;96年北美隧道, 卷1; 北美隧道国际会议;a476.08;Ozdemir;Levent;International Conference on North American Tunneling'96;Washington;1996;101;458173;476.08;In8;v1 ; r¥758.05;a07;b1